Adopted July 18, 1894, by a Committee of the Master Steam and Hot
Water Fitters’ Association, a Committee of the Society of Mechanical
Engineers of the United States, and the leading valve and fitting
manufacturers of the United States.
=======+===================+=========+===========+========
|Pipe thickness, | | |
|(_P_ + 100) | | |
|--------- | | |
Pipe | .4_S_ |Thickness| Stress on | Radius
size, | | nearest | pipe per | of
Inches.|_d_+.333(1-_d_/100)|fraction,| square | fillet,
| | inches. |inch at 200|inches.
| _S_-18,000 lbs. | | lbs. |
-------+-------------------+---------+-----------+--------
2 | .409 | 7/16 | 460 | 1/8
2-1/2| .429 | 7/16 | 550 | 1/8
3 | .448 | 7/16 | 690 | 1/8
3-1/2| .466 | 1/2 | 700 | 1/8
4 | .486 | 1/2 | 800 | 1/8
4-1/2| .498 | 1/2 | 900 | 1/8
5 | .525 | 1/2 | 1,000 | 1/8
6 | .563 | 9/16 | 1,060 | 1/8
7 | .60 | 5/8 | 1,120 | 1/8
8 | .639 | 5/8 | 1,280 | 1/8
9 | .678 | 11/16 | 1,310 | 3/16
10 | .713 | 3/4 | 1,330 | 3/16
12 | .79 | 13/16 | 1,470 | 3/16
14 | .864 | 7/8 | 1,600 | 3/16
15 | .904 | 15/16 | 1,600 | 3/16
16 | .946 |1 | 1,600 | 3/16
18 | 1.02 |1-1/16 | 1,690 | 3/16
20 | 1.09 |1-1/8 | 1,780 | 3/16
22 | 1.18 |1-3/16 | 1,850 | 1/4
24 | 1.25 |1-1/4 | 1,920 | 1/4
26 | 1.30 |1-5/16 | 1,980 | 1/4
28 | 1.38 |1-3/8 | 2,040 | 1/4
30 | 1.48 |1-1/2 | 2,000 | 1/4
36 | 1.71 |1-3/4 | 1,920 | 1/4
42 | 1.87 |2 | 2,100 | 1/4
48 | 2.17 |2-1/4 | 2,130 | 1/4
-------+-------------------+---------+-----------+--------
=======+==============+=========+===============+============
| | Flange | |
Pipe | |thickness| Flange | Width
size, | Flange | at hub | thickness | flange
Inches.| diameter, | for iron| at edge, | face,
| inches. | pipe, | inches. | inches.
| | inches. | |
-------+--------------+---------+---------------+------------
2 | 6 | 1 | 5/8 | 2
2-1/2| 7 | 1-1/8 | 11/16| 2-1/4
3 | 7-1/2| 1-1/4 | 3/4 | 2-1/4
3-1/2| 8-1/2| 1-1/4 | 13/16| 2-1/2
4 | 9 | 1-3/8 | 15/16| 2-1/2
4-1/2| 9-1/4| 1-3/8 | 15/16| 2-3/8
5 | 10 | 1-1/2 | 15/16| 2-1/2
6 | 11 | 1-1/2 | 1 | 2-1/2
7 | 12-1/2| 1-1/2 | 1-1/16 | 2-3/4
8 | 13-1/2| 1-3/4 | 1-1/8 | 2-3/4
9 | 15 | 1-3/4 | 1-1/8 | 3
10 | 16 | 2 | 1-3/16 | 3
12 | 19 | 2 | 1-1/4 | 3-1/2
14 | 21 | 2 | 1-3/8 | 3-1/2
15 | 22-1/4| 2 | 1-5/8 | 3-5/8
16 | 23-1/2| 2-1/4 | 1-7/16 | 3-3/4
18 | 25 | ... | 1-9/16 | 3-1/2
20 | 27-1/2| ... | 1-11/16| 3-3/4
22 | 29-1/2| ... | 1-13/16| 3-3/4
24 |31-1/2 32 | ... |1-1/4 1-7/8 |3-3/4 4
26 |33-3/4 34-1/4| ... |1-3/8 2 |3-7/8 4-1/8
28 |36 36-1/2| ... |1-7/16 2-1/16 |4 4-1/4
30 |38 38-3/4| ... |1-1/2 2-1/8 |4 4-3/8
36 |44-1/2 45-3/4| ... |1-3/4 2-3/8 |4-1/4 4-7/8
42 |51 52-3/4| ... |1-7/8 2-5/8 |4-1/2 5-3/8
48 |57-1/2 59-1/2| ... |2 2-3/4 |4-3/4 5-3/4
-------+--------------+---------+---------------+------------
=======+============+==============+======+============+=======+==========
| | | | | |
| | | | | | Stress on
| | | | | |each bolt,
Pipe | Width | | | | |per square
size, | flange | Bolt circle |Number| Bolt size | Bolt | inch at
Inches.| face, | diameter, | of | diameters, |length,| bottom of
| inches. | inches. |bolts.| inches. |inches.| thread at
| | | | | | 200 lbs.
-------+------------+--------------+------+------------+-------+----------
2 | 2 | 4-3/4| 4 | 1/2 5/8| 2 | 825
2-1/2| 2-1/4| 5-1/2| 4 | 1/2 5/8| 2-1/4 | 1,050
3 | 2-1/4| 6 | 4 | 1/2 5/8| 2-1/2 | 1,330
3-1/2| 2-1/2| 7 | 4 | 1/2 5/8| 2-1/2 | 2,530
4 | 2-1/2| 7-1/2| 4 | 3/8 3/4| 2-3/4 | 2,100
4-1/2| 2-3/8| 7-3/4| 8 | 5/8 3/4| 3 | 1,430
5 | 2-1/2| 8-1/2| 8 | 5/8 3/4| 3 | 1,630
6 | 2-1/2| 9-1/2| 8 | 5/8 3/4| 3 | 2,360
7 | 2-3/4| 10-3/4| 8 | 5/8 3/4| 3-1/4 | 3,200
8 | 2-3/4| 11-3/4| 8 | 5/8 3/4| 3-1/2 | 4,190
9 | 3 | 13-1/4| 12 | 5/8 3/4| 3-1/2 | 3,610
10 | 3 | 14-1/4| 12 | 5/8 7/8| 3-5/8 | 2,970
12 | 3-1/2| 17 | 12 | 3/4 7/8| 3-3/4 | 4,280
14 | 3-1/2| 18-3/4| 12 | 7/8 1 | 4-1/4 | 4,280
15 | 3-5/8| 20 | 16 | 7/8 1 | 4-1/4 | 3,660
16 | 3-3/4| 21-1/4| 16 | 7/8 1 | 4-1/4 | 4,210
18 | 3-1/2| 22-3/4| 16 |1 1-7/8| 4-3/4 | 4,540
20 | 3-3/4| 25 | 20 |1 1-1/8| 5 | 4,490
22 | 3-3/4| 27-1/4| 20 |1 1-1/4| 5-1/2 | 4,320
24 |3-3/4 4 |29-1/4 29-1/2| 20 |1 1-1/4| 5-1/2 | 5,130
26 |3-7/8 4-1/8|31-1/4 31-3/4| 24 |1 1-1/4| 5-3/4 | 5,030
28 |4 4-1/4|33-1/2 34 | 28 |1 1-1/4| 6 | 5,000
30 |4 4-3/8|35-1/2 36 | 28 |1-1/8 1-3/8| 6-1/4 | 4,590
36 |4-1/4 4-7/8|42 42-3/4| 32 |1-1/8 1-3/8| 6-1/2 | 5,790
42 |4-1/2 5-3/8|48-1/2 49-1/2| 36 |1-1/4 1-1/2| 7-1/4 | 5,700
48 |4-3/4 5-3/4|54-3/4 56 | 44 |1-3/8 1-1/2| 7-3/4 | 6,090
-------+------------+--------------+------+------------+-------+----------